Adjustable protective book cover



FIG. 1 is a top plan view of an adjustable book cover showing my newdesign;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevation view thereof; the opposite side being a mirorimage of that shown;

FIG. 4 is an end elevation view thereof; the opposite end being a mirrorimage of that shown; and,

FIG. 5 is a top plan view thereof with the bottom and side edges infolded condition.

The ornamental design for an adjustable protective book cover, as shownand described.